Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines classic open-gear vintage aesthetics with precise tuning performance and ultra-smooth operation. Designed with an open gear and worm gear construction, it provides exceptional tuning stability and acoustic resonance on any instrument.
Featuring an 18:1 gear ratio, this machine head offers precise adjustments and long-lasting durability. The precision-fit contact surfaces eliminate synthetic polymer coatings, ensuring wear-free operation, optimal stick-slip interaction, and pure tonal transfer.
Engineered to match standard production instrument dimensions, it allows for straightforward installation or replacement. Permanently locked and sealed screw joints provide maintenance-free longevity, while countersunk mounting holes guarantee a solid hold and secure fit.
Brand
Schaller
Product Type
Guitar Tuning Machine
Model
GrandTune Single (GT-Single)
Gear Ratio
1:18
Design
Open-gear
Weight per Single Tuner
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) including bushing
Button Dimensions (W x H x D)
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons)
Included Hardware
2 countersunk mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (solid headstock)